water pump ac or dc?

water pump ac or dc?

We own a concession trailer, and our old pump just burned out (middle of a 4th of July event!). I hated that pump because it was really loud, and we'd get complaints about it. We also noticed it was DC, and at most events, we hook up to spider boxes. We purchased a Shurflo 2088 AC today, hooked it up to a plug, and it sounded just as loud as our old one. I want to buy a shurflo whisper king, it's supposed to be really quiet.

So my question is, do we have to go with an AC water pump, since we're hooked up to electric most of the time (rarely ever use our generator, and don't have battery)? Or would a DC pump work, especially since they are less expensive? And how do other trailers keep their water pump quiet? It's located almost right below the serving/ordering window, and in order to relocate we would have to do some major plumbing issues.